Interviews with a dozen Democratic elected officials, candidates and strategists — including both supporters and critics of Israel — revealed growing concerns about AIPAC’s interventions. Strategists warn that AIPAC’s attacks on Evanston Mayor Daniel Biss, the grandson of a Holocaust survivor, created an opening for progressive social media influencer Kat Abughazaleh, a Palestinian-American who is a vocal critic of Israel and appears to have late momentum in the race, over AIPAC’s preferred candidate, more moderate state Sen. Laura Fine. In the past week, the group has pulled down all of its anti-Biss messaging, but it could prove too late. “There’s...